hardhat-extract: Generics for object extraction

hardhat-extractR Documentation

Generics for object extraction


These generics are used to extract elements from various model objects. Methods are defined in other packages, such as tune, workflows, and workflowsets, but the returned object is always the same.

  • extract_fit_engine() returns the engine specific fit embedded within a parsnip model fit. For example, when using parsnip::linear_reg() with the "lm" engine, this returns the underlying lm object.

  • extract_fit_parsnip() returns a parsnip model fit.

  • extract_mold() returns the preprocessed "mold" object returned from mold(). It contains information about the preprocessing, including either the prepped recipe, the formula terms object, or variable selectors.

  • extract_spec_parsnip() returns a parsnip model specification.

  • extract_preprocessor() returns the formula, recipe, or variable expressions used for preprocessing.

  • extract_recipe() returns a recipe, possibly estimated.

  • extract_workflow() returns a workflow, possibly fit.

  • extract_parameter_dials() returns a single dials parameter object.

  • extract_parameter_set_dials() returns a set of dials parameter objects.


extract_workflow(x, ...)

extract_recipe(x, ...)

extract_spec_parsnip(x, ...)

extract_fit_parsnip(x, ...)

extract_fit_engine(x, ...)

extract_mold(x, ...)

extract_preprocessor(x, ...)

extract_parameter_dials(x, ...)

extract_parameter_set_dials(x, ...)



An object.


Extra arguments passed on to methods.


# See packages where methods are defined for examples, such as `parsnip` or
# `workflows`.

hardhat documentation built on March 31, 2023, 10:21 p.m.